Need low CTE Epoxy

[sdk_imported]

I am looking for a casting epoxy that has good mechanical strength and high tempererature capability with a low CTE. We've tested BisA with 20% glass microbubble fill and have measured 25 uin/in-degF. We measured unfilled to be 35 uin/in-degF. I need an epoxy with a CTE around 13 uin/in-degF .

Please make recommendations on what else I can do to reduce the CTE? Different fillers? Different resin?

Thanks

 

[Dave27]

Try Bacon Industries P-182.
Coefficient of Linear Thermal Expansion: 11.7 - 15.3 between -65'F & 212'F.

 

[sdk_imported]

Great lead Dave. Have you worked with this material before? What is your opinion about using if for a casting? Do you think brittleness is going to be troublesome?

Thanks,
Scott

 

[Dave27]

Scott,

Have used previous version (P-82) of this epoxy for a small sensor casting - no problems with brittleness!
Try Bacon's website for full details:

http://www.baconindustries.com.

Hope things work out.

Regards,

Dave